Curtis Hard
68 lines
1.6 KiB
Objective-C
68 lines
1.6 KiB
Objective-C
//
|
|
// IJSVGPatternLayer.m
|
|
// IJSVGExample
|
|
//
|
|
// Created by Curtis Hard on 07/01/2017.
|
|
// Copyright © 2017 Curtis Hard. All rights reserved.
|
|
//
|
|
|
|
#import "IJSVGPatternLayer.h"
|
|
|
|
@implementation IJSVGPatternLayer
|
|
|
|
@synthesize pattern;
|
|
@synthesize patternNode;
|
|
|
|
- (void)dealloc
|
|
{
|
|
(void)([pattern release]), pattern = nil;
|
|
(void)([patternNode release]), patternNode = nil;
|
|
[super dealloc];
|
|
}
|
|
|
|
- (id)init
|
|
{
|
|
if ((self = [super init]) != nil) {
|
|
self.requiresBackingScaleHelp = YES;
|
|
self.shouldRasterize = YES;
|
|
}
|
|
return self;
|
|
}
|
|
|
|
void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
|
|
{
|
|
// reassign the layer
|
|
IJSVGPatternLayer* layer = (IJSVGPatternLayer*)info;
|
|
[layer.pattern renderInContext:ctx];
|
|
};
|
|
|
|
- (void)drawInContext:(CGContextRef)ctx
|
|
{
|
|
// holder for callback
|
|
static const CGPatternCallbacks callbacks = { 0, &IJSVGPatternDrawingCallBack, NULL };
|
|
|
|
// create base pattern space
|
|
CGColorSpaceRef patternSpace = CGColorSpaceCreatePattern(NULL);
|
|
CGContextSetFillColorSpace(ctx, patternSpace);
|
|
CGColorSpaceRelease(patternSpace);
|
|
|
|
// create the pattern
|
|
CGRect rect = self.bounds;
|
|
CGPatternRef ref = CGPatternCreate((void*)self, self.bounds,
|
|
CGAffineTransformIdentity,
|
|
roundf(rect.size.width * self.patternNode.width.value),
|
|
roundf(rect.size.height * self.patternNode.height.value),
|
|
kCGPatternTilingConstantSpacing,
|
|
true, &callbacks);
|
|
|
|
// set the pattern then release it
|
|
CGFloat alpha = 1.f;
|
|
CGContextSetFillPattern(ctx, ref, &alpha);
|
|
CGPatternRelease(ref);
|
|
|
|
// fill it
|
|
CGContextFillRect(ctx, rect);
|
|
}
|
|
|
|
@end
|